Testosterone, Free (Dialysis), Total (MS) and Sex Hormone Binding Globulin

Testosterone, Free (Dialysis), Total (MS), and Sex Hormone Binding Globulin - Testosterone is mostly bound to transport proteins in circulation, with less than 1% remaining free. Measuring Free Testosterone can be helpful when there are suspected disturbances in Sex Hormone Binding Globulin (SHBG), such as in cases of obesity or high estrogen levels. Testosterone measurements are used to evaluate conditions like erectile dysfunction, infertility, gynecomastia, and osteoporosis, as well as to monitor hormone replacement therapy.

Preferred Specimen(s):

3 mL serum

Minimum:

Volume 1 mL

 Methodology:

Chromatography/Mass Spectrometry • Equilibrium Dialysis • Calculation (CALC) • Immunoassay (IA)